A multistream heat exchanger model with enthalpy feasibility

Kyungjae Tak; Hweeung Kwon; Jaedeuk Park; Jae Hyun Cho; Il Moon

doi:10.1016/j.compchemeng.2018.03.023

A multistream heat exchanger model with enthalpy feasibility

Kyungjae Tak, Hweeung Kwon, Jaedeuk Park, Jae Hyun Cho, Il Moon

Department of Chemical and Biomolecular Engineering

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

A temperature feasibility constraint is an important part of multistream heat exchanger (MSHE) modeling. However, temperature feasibility of an MSHE model makes a numerical issue when a physical property package is used to obtain highly accurate temperature-enthalpy relationships in equation-oriented modeling environment. To resolve the issue, this study proposes a new MSHE model with enthalpy feasibility using the fact that enthalpy is a monotonically increasing function of temperature. A natural gas liquefaction process, called a single mixed refrigeration process, is optimized using the proposed MSHE model under an equation-oriented modeling environment with a physical property package as a case study.

Original language	English
Pages (from-to)	81-88
Number of pages	8
Journal	Computers and Chemical Engineering
Volume	115
DOIs	https://doi.org/10.1016/j.compchemeng.2018.03.023
Publication status	Published - 2018 Jul 12

Bibliographical note

Funding Information:
This research was supported by a grant from the LNG Plant R&D Center funded by the Ministry of Land, Infrastructure and Transport ( MOLIT ) of the Korean government and also respectfully supported by Engineering Development Research Center (EDRC) funded by the Ministry of Trade, Industry & Energy ( MOTIE ).

Funding Information:
This research was supported by a grant from the LNG Plant R&D Center funded by the Ministry of Land, Infrastructure and Transport (MOLIT) of the Korean government and also respectfully supported by Engineering Development Research Center (EDRC) funded by the Ministry of Trade, Industry & Energy (MOTIE).

Publisher Copyright:
© 2018 Elsevier Ltd

All Science Journal Classification (ASJC) codes

Chemical Engineering(all)
Computer Science Applications

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10.1016/j.compchemeng.2018.03.023

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abstract = "A temperature feasibility constraint is an important part of multistream heat exchanger (MSHE) modeling. However, temperature feasibility of an MSHE model makes a numerical issue when a physical property package is used to obtain highly accurate temperature-enthalpy relationships in equation-oriented modeling environment. To resolve the issue, this study proposes a new MSHE model with enthalpy feasibility using the fact that enthalpy is a monotonically increasing function of temperature. A natural gas liquefaction process, called a single mixed refrigeration process, is optimized using the proposed MSHE model under an equation-oriented modeling environment with a physical property package as a case study.",

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AU - Moon, Il

N1 - Funding Information: This research was supported by a grant from the LNG Plant R&D Center funded by the Ministry of Land, Infrastructure and Transport ( MOLIT ) of the Korean government and also respectfully supported by Engineering Development Research Center (EDRC) funded by the Ministry of Trade, Industry & Energy ( MOTIE ). Funding Information: This research was supported by a grant from the LNG Plant R&D Center funded by the Ministry of Land, Infrastructure and Transport (MOLIT) of the Korean government and also respectfully supported by Engineering Development Research Center (EDRC) funded by the Ministry of Trade, Industry & Energy (MOTIE). Publisher Copyright: © 2018 Elsevier Ltd

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A multistream heat exchanger model with enthalpy feasibility

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